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Jan. 30, 1923.

W. RICHMOND ET AL. FLUID CONTROL DEVICE.

flLfD AUG-10,191!- Inveniors ZUaZier Richmond John Ellzoii Jenkzns B3 w ww the compound thermostat blade T.

Patented Jan. 30, 1923.

UNITED; STAIES PATENT orrrcs.

Application filed August 10, 1911 emu no. muse.

To all whom it may cam-em:

Be it known that-we, WALTER RICHMOND and Join: Emo'rr JENKINS, each a. citizen of the'United States, residing at Chicago, Illinois have invented an Improvement in Fluid-dontrol Devices, of which the following is a specification.

his invention relates to devices for controlling a multiple fluid system, and particularly for simultaneously controlling themrious arts of'ai complete refrigeratin sys tem, a thou h in man oi-its' aspects t e mvention an several 0 "the subordinate units thereof are capable of broader application.

It isan object of the invention to provide apparatus of the character described simpleand economical inconstruction and on tremely eiiicient and economical in operation' The drawing is a. partly diagrammatic and partly cross-sectional view-of a-fiuid" controlling valve and associated apparatus constructed in accordance with" our inven- In the drawings, 1 diagrammatically represents a thermostat located in a refrigeratinpi chamber, which may be that of'a house-f ho d refrigerator, having a. hot contact Ilend s. cold contact C between which plugs" agrammatically represents a motor operating'an ammonia-gas compression system or its e uivalent provided with the usual brine or ot ier pipes for supplying refrigerating fluid to the refrigerating chamber.' 3 repu e in cooling chamber to"'cool the, com} pressed-ammonia or other gas by means of a flow oi cooling fluid, which. is flpreiergibly water flowing under pressure from'the city mains into and from the chamber 3 by the pipes 4. The gas compression system may we of? any ordinary and well known type.

We will now describe the cont-rolling valve for the water supply system. "The pipe 4 above described is in connection by means of pipes 5 and 6 with the city water mains or other source'of, pressure Water sup 13. Between the pipes 521ml 6 is inser a valve comprising :1 chamber 7 divided by diaphragm 3 se crating its inlet from its outlet side. The chamber 7 is provided with cy lindricnl extensions 9 and 10, aligned with a port through the diaphragm 8. iSlidably and rather snugly mounted in the port, is a. hollowvalve sten l lequip e d'with a c'onical valve 12 co-op'e'rating with a valve seat at h pert see furth r WPiPP with p s tures 13 below and adjacent the valve 12. The'hollow valve stem extends a considerable distance upward within a c lindrical casin 14, sweater] or otherwise tightly sedu iii-the extension 10, and is with apair of collars 15 end 16 within said casing, these collarsbeing cut away at different ints about their peri hery to ermit rea y .flow of fluid past em but aving their uncut awa portions fitting snugly enough to maintain-the-velve stem 1n correct alignment. Betwecnthe collars 15 and 16 is loosely! mounted an armature 17 (s lit to prevent eddy currents? shorter than t e distance'between the 'co lers so as to have a hammer action upon them when moved u ordown'." Below t e (lie hragm 8'the ho ow va'lve l l-is exten ed into the extension Q'andut its'bOttom is rovided with' an enlar ement 18so 'calcl tedas to leave a sine e'r ope'ninghetweeiiitsperipheral edge and the inner? wall of th'e extension 9= than the elfective-area ofi-the valve 12: It'will be seen that aisubordinate chamber 19 is pro-. videdin the extension -9' below the enlarge provided mentn-l8 throughwhichwater must pass 01rits' wa' 'to "outlet 5. An adjustable check valve O'i's prbvided upon the outlet pipe 5 to'regulate" the flow of water and adjust the h draul-i'c action inrthe chamber 19 hereinahaer'tdbe-decribeds: 'De ending from and s ecured'to -thercylindrica extension 9 is a frilnie 22;having-bolted thereto at its lower end a three-way :switch; indicated in general 23'; the construction "of which is wellknown;- The frame 22 is provided with a cross bar '24, and screwed into the end of the extensionfi'and forming en'extension of the chamber 19,'is the tube 8 forming a part of the diaphra 27;fromthe lower end of whichesten the partially screw threaded shaft 28, passing freely through the cross bar and having an'end '29 secured at 25 to the operating push: rod 30 'of the three-way s'witchi" spring' 31abuts at one *end against tlie'c ross bar 24 and'at the other against an adjusteble bolt 32 on'the screw threaded shaft Secured n'the cylindrical casing M are a airi so enoids 33 and 34. Above the cy 'ndlficail chamber lfl 'und in communication therewith hy apipe 35' is a supplementary frame 36 having mounted therein a small diephragm 37 in o en communication with the cylindrical mom or 14'which controls the-circuit br aking devi e 38 o s to outlet passages, a hollow stem for said valve, an aperture in said stem edjacent'the valve and on the outlet side thereof, a constricted opening between the bottom of said valve stem and the interior of said chamber, whereby said valve stem will be hydraulically maintained in open position the pressure of the water in the chamber rior to its escape'through said constrict opening 10. A fluid controlling device comprising a. chamber having inlet and outlet ppsseges, a port in said chamber between said inlet and outlet passa' es, a hollow vuflve stem slidebly and snug y mounted in said port, a valve on said valve stem ada ted to close said port, an aperture in sai va lve stem adapted to connect the inlet side of solid pussage with the interior of the valve stem when the valve is open, a constricted open ing between the discharge dint of said hollow valve stem and sei outlet; passage whereby. the back 'pressure occesioned said constricted opening serves to ma ntain said valve in open tion.

11. A fluid contra ling device comprising a chamber hevin inlet'and outlet pessege's, a port in said c ember between sand inlet and outlet 'ppssages, a hcl lo v valve stem slidably mounted in said port, a valve on said valve stem adopted to close eaidport, an opening in seid valve stem permit the passage of water through the same when said valve is in open positlon, on enlargement upon the lover end or said hollow valve stem constricting the o'pemng between said valve stein'and t e walls of said chainber whereby the back pressure occasioned by said enlargement ects'upon and enlargement to 'n ia'intslin said valve in open posit-ion after the samehas'been opened.

i 12. In a refri'geratingippdiatus, a fluid sup 1y, a motor operatively"elsociated i h sa'i fluid supply, a device for controlling the flow of fluid in said fluid su ply system, comprising a. chamber hpving'i at end outlet passages. a vulve mounted in said cham her, a. subordinate chamber having a constricted outlet, a diaphragm m communion tion with said subordinate chamber, and circuit controlling means operated by said diaphragm.

13. In apparatus of the class described, a motor a circuit therefor, a, fluid supply system. a device for controlling the flo w of fluid in said fluid supply system. comprising; a chamber having inlet and oiitlet passages, =1 valve mounted in said chamber, circuits for 'opereting said valve, a. subordinate ch ambcr having a constricted outlet, :1 diapl rugm in'coinmuniction with said subordinate'chumber, and circuit controlling means operet'edfby said diaphragm, said circuit controlling means bein adapted to control the motor circuit and e circuits for operating said valve, means to energize the circuits for operating siiid vulva, and a refrigeratiu device operated by the motor.

14. n apparatus of'the class described, a coolin water supply system, an electrical contro device, a valve, electrical devices to open and close the some, hydraulic means for maintaining said valve in open position and simultaneously operating circuit contrullini devices.

15. water supply system for refrigeratin devices or the like comprising a'valve, sofenoids for actuating said valve, hydraulic means cont'1-olled'l5y"said' valve for cutting out the valve opening circuit upon opening the valve and for cutting out thevalveclosing solenoidcircuitup'on closihgt'he valve, and hydraulic means'for cutting out the 'velve' openii'ig'circuit upon failure of pressure upon 'tlie'inl'et side of said valve.

16. In apparatus of the clerssdescribed and in combination, a r'efri ernting device and a motor therefor, e. fluid system a prirum-y control device, a valve controlling the flow of fluid through said system nleuns controlled by 'seicl'prinieiy control device for opening said valve and ste'rting'said motor encl'clos'ing seid vclve and stoppin said motor, and means enclosed 'Within'sai fluid system for meintaining'said' valve" in open or closed position.

' 17. In epparetus 'o'i'the class described, a casing having an inlet and ail outlet, a valve therein adapted t'o'be moved into open or closed position, and means within the'casing o erotive to maintain seid valve in open or osed position through fluid pressure without permitting escape of fluid except through said outlet.

18. In apparatus of the class described, a casing, en'inlet pipe, an outlet pipe, a valve interposed between the pipes in the casing, and adapted to be shifted to open or closed position. hydraulic rneans entirely enclosed within the casing for maintuining thevalve in open or closed position when communication-is made through the inlet pipe With a. source of fl uid presume.

In testimony whereof, We names'tothis specification.

" WALTER RICHMOND.

JOHN ELLIOTT JENKINS.

have signed our 

